Mike bought 8 shares of stock for $57.50 each, hoping that the value would increase. When he sold the shares it was only for $42.75 per share. Which describes Mikes net profit

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?